# How can I find the difference between two date columns in Oracle?

## How can I find the difference between two date columns in Oracle?

Answer: Oracle supports date arithmetic and you can make expressions like “date1 – date2” using date subtraction to get the difference between the two dates.

## How can I find the difference between two timestamps in Oracle?

To calculate the difference between the timestamps in Oracle, simply subtract the start timestamp from the end timestamp (here: arrival – departure ). The resulting column will be in INTERVAL DAY TO SECOND . The first number you see is the number of whole days that passed from departure to arrival .

**How can I find the difference between two timestamps in SQL?**

To calculate the difference between the timestamps in MySQL, use the TIMESTAMPDIFF(unit, start, end) function. The unit argument can be MICROSECOND , SECOND , MINUTE , HOUR , DAY , WEEK , MONTH , QUARTER , or YEAR . To get the difference in seconds as we have done here, choose SECOND .

### How do you find the difference between two timestamps?

If you’d like to calculate the difference between the timestamps in seconds, multiply the decimal difference in days by the number of seconds in a day, which equals 24 * 60 * 60 = 86400 , or the product of the number of hours in a day, the number of minutes in an hour, and the number of seconds in a minute.

### How do I calculate the number of days between two dates in PL SQL?

How to generate days, weeks, or months between two dates in Oracle Database

- Subtracting the first date from the last to get the number of days.
- Generate this many rows (adding one if you want to include the end date in the output)
- Add the current row number (minus one) to the start date.

**What is the difference between date and TIMESTAMP in Oracle?**

TIMESTAMP is the same as DATE , except it has added fractional seconds precision. The biggest difference: DATE is accurate to the second and doesn’t have fractional seconds. TIMESTAMP has fractional seconds.

#### Can you subtract timestamps?

The result of subtracting one timestamp (TS2) from another (TS1) is a timestamp duration that specifies the number of years, months, days, hours, minutes, seconds, and fractions of a second between the two timestamps. then %SECOND(RESULT) = %SECOND(TS1) – %SECOND(TS2).

#### How do you convert timestamps to minutes?

var timestamp = 9462; // 2 var hours = Math. floor(timestamp / 60 / 60); // 157 var minutes = Math. floor(timestamp / 60); We’ll multiply our hours by 60 to get its value in minutes, then subtract to it from our minutes to get the correct value.

**How is timestamp calculated?**

Here’s an example of how Unix timestamp is calculated from the wikipedia article: The Unix time number is zero at the Unix epoch, and increases by exactly 86 400 per day since the epoch. Thus 2004-09-16T00:00:00Z, 12 677 days after the epoch, is represented by the Unix time number 12 677 × 86 400 = 1 095 292 800.